| Cooperating organisations |
|
6 | (1) |
| Preface |
|
7 | (2) |
|
Chapter 1 Design sequence |
|
|
9 | (4) |
|
|
|
9 | (1) |
|
1.2 Supply characteristics |
|
|
10 | (1) |
|
|
|
10 | (1) |
|
|
|
10 | (1) |
|
1.5 Standard final circuits T1 |
|
|
|
1.6 Isolation and switching |
|
|
11 | (1) |
|
|
|
11 | (1) |
|
|
|
11 | (2) |
|
Chapter 2 Simple installations and final circuits |
|
|
13 | (14) |
|
|
|
13 | (1) |
|
2.2 Supply characteristics |
|
|
13 | (3) |
|
2.3 Fault rating of switchgear |
|
|
16 | (1) |
|
2.4 Final circuit overcurrent protective devices and cables |
|
|
16 | (4) |
|
2.5 Final circuit voltage drop limitations |
|
|
20 | (3) |
|
|
|
23 | (1) |
|
2.7 Short-circuit current protection |
|
|
24 | (1) |
|
2.8 Protective conductors |
|
|
25 | (1) |
|
2.9 Standard final circuits |
|
|
25 | (2) |
|
Chapter 3 Maximum demand and diversity |
|
|
27 | (16) |
|
|
|
27 | (2) |
|
|
|
29 | (1) |
|
3.3 Final circuit current demand |
|
|
30 | (2) |
|
3.4 Diversity between final circuits |
|
|
32 | (4) |
|
3.5 Complex installations |
|
|
36 | (7) |
|
Chapter 4 Selection of cables for current-carrying capacity |
|
|
43 | (20) |
|
|
|
43 | (1) |
|
|
|
43 | (1) |
|
4.2 Overcurrent requirements |
|
|
44 | (2) |
|
4.3 Current-carrying capacity tables |
|
|
46 | (9) |
|
4.4 Protection against overload and short-circuit |
|
|
55 | (1) |
|
4.5 Protection against fault current only (omission of overload protection) |
|
|
56 | (2) |
|
4.6 Corrections for grouping not liable to simultaneous overload |
|
|
58 | (1) |
|
|
|
59 | (4) |
|
|
|
63 | (8) |
|
5.1 Voltage drop in consumers' installations |
|
|
63 | (1) |
|
5.2 Distribution system voltage drop |
|
|
63 | (1) |
|
5.3 Basic voltage drop calculation |
|
|
64 | (2) |
|
5.4 Correction for inductance |
|
|
66 | (2) |
|
5.5 Correction for load power factor |
|
|
68 | (1) |
|
5.6 Correction for conductor operating temperature |
|
|
69 | (1) |
|
5.7 Correction for both conductor operating temperature and load power factor |
|
|
70 | (1) |
|
Chapter 6 Calculation of fault current |
|
|
71 | (12) |
|
6.1 Determination of prospective fault current |
|
|
71 | (2) |
|
6.2 Determined by enquiry |
|
|
73 | (2) |
|
6.3 Determined by calculation |
|
|
75 | (8) |
|
Chapter 7 Shock protection |
|
|
83 | (8) |
|
|
|
83 | (1) |
|
7.2 Protective measure: automatic disconnection of supply |
|
|
84 | (4) |
|
|
|
88 | (3) |
|
Chapter 8 Protection against fault current |
|
|
91 | (26) |
|
8.1 The adiabatic equation |
|
|
91 | (2) |
|
8.2 Selection from Table 54.7 |
|
|
93 | (2) |
|
8.3 Introduction to calculations |
|
|
95 | (1) |
|
|
|
95 | (3) |
|
8.5 Energy let-through calculation |
|
|
98 | (3) |
|
8.6 Plotting protective conductor adiabatics |
|
|
101 | (4) |
|
8.7 Protective conductor as a sheath or armour of a cable |
|
|
105 | (1) |
|
8.8 Plotting of cable armour adiabatics |
|
|
106 | (1) |
|
8.9 Calculation of armour capability |
|
|
107 | (3) |
|
8.10 Conduit and trunking |
|
|
110 | (1) |
|
8.11 Earthing and bonding conductors |
|
|
111 | (6) |
|
Chapter 9 Calculations associated with testing |
|
|
117 | (6) |
|
|
|
117 | (1) |
|
|
|
118 | (1) |
|
9.3 Earth fault loop impedance Zs |
|
|
118 | (3) |
|
9.4 Reduced section protective conductors |
|
|
121 | (2) |
|
Chapter 10 Impedance of copper and aluminium conductors |
|
|
123 | (6) |
|
|
|
123 | (1) |
|
10.2 Conductor resistance and temperature |
|
|
123 | (1) |
|
10.3 Impedance of cables from voltage drop tables |
|
|
124 | (5) |
|
|
|
129 | (6) |
|
|
|
129 | (1) |
|
|
|
130 | (1) |
|
|
|
131 | (2) |
|
11.4 Overcurrent protection |
|
|
133 | (2) |
|
Chapter 12 Protection against voltage disturbances |
|
|
135 | (6) |
|
|
|
135 | (1) |
|
|
|
135 | (1) |
|
12.3 Power frequency fault voltages |
|
|
135 | (4) |
|
12.4 Power frequency stress voltages |
|
|
139 | (1) |
|
12.5 Earthing of 11 kV substations |
|
|
139 | (2) |
|
Chapter 13 Busbar trunking |
|
|
141 | (4) |
|
|
|
141 | (1) |
|
|
|
141 | (1) |
|
|
|
142 | (24) |
| Appendix A Symbols |
|
145 | (4) |
| Appendix B Standard final circuits |
|
149 | (16) |
| Appendix C Avoidance of unintentional operation of circuit-breakers |
|
165 | (4) |
|
C.1 Lighting circuit applications |
|
|
166 | (3) |
| Appendix D Further cable calculations |
|
169 | (6) |
|
|
|
169 | (1) |
|
D.2 Temperatures (core and sheath) (Effect of load current on conductor operating temperature) |
|
|
170 | (1) |
|
D.3 Inductance of cables in parallel |
|
|
170 | (1) |
|
D.4 Calculation of sheath voltages |
|
|
171 | (4) |
| Appendix E Symbols from CENELEC report CLC/TR 50480 |
|
175 | (2) |
| Appendix F Equipment data |
|
177 | (18) |
| Index |
|
195 | |
